Series 8 heavy duty complete driveline assemblyConstant Velocity which is needed on the harversters1-3/4" 20 splined tractor yoke with pull type metal collar1-3/8" 21 splined implement yoke with clamp style boltoverall compressed length is 55"80 lbs (keep this in mind on the freight charges. It is expensive to ship these heavy and long shafts) Eurocardan madeALWAYS LEAVE 1/3 OF THE SHAFT IN THE TUBE WHILE OPERATING Remember that all pto shafts can be cut down if they are too long, just cut the same amount of each side fo the shaft. This can be done with a hacksaw We carry all replacement parts for everything we sell.